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Nexperia USA Inc. PZU4.7BA,115
- Part No.:
- PZU4.7BA,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU4.7BA,115.pdf
- Description:
- DIODE ZENER 4.7V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:870
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Product details
Overview
PZU4.7BA,115 from Nexperia is a general-purpose Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision voltage reference and overvoltage protection in low-power analog and digital circuits. It delivers 4.7 V nominal Zener voltage with ±5 % tolerance (B series), 800 Ω maximum differential resistance at IZ = 5 mA, 2 µA maximum reverse current at VR = 4.01 V, and operates up to 150 °C junction temperature - deployed in power supply feedback loops and sensor biasing networks.
For engineers reviewing the PZU4.7BA,115 datasheet, PZU4.7BA,115 pinout, PZU4.7BA,115 application, or PZU4.7BA,115 equivalent, this page provides verified electrical parameters, thermal resistance data (Rth(j-a) = 390 K/W), cathode/anode terminal mapping, and direct alternatives with documented tolerance and leakage differences.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC voltage under varying load and input conditions. Its hard breakdown knee and low dynamic impedance (800 Ω typ. at 5 mA) ensure minimal voltage deviation during transient current changes, while intentional low leakage (2 µA max at 4.01 V) supports high-impedance sensing nodes.
The device uses silicon planar technology with metallization optimized for surface-mount reliability on FR4 PCBs. Thermal performance is defined by junction-to-ambient (390 K/W) and junction-to-solder-point (255 K/W) resistances, enabling accurate derating in compact layouts where airflow is limited and copper area is constrained to standard SOD323 footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 4.7 V nominal, ±5 % tolerance (B series); sets precise reference point for regulation at IZ = 5 mA |
| Differential resistance rdif | 800 Ω max at IZ = 5 mA; determines output voltage stability against load current variation |
| Reverse current IR | 2 µA max at VR = 4.01 V; ensures minimal quiescent power loss in standby bias networks |
| Total power dissipation Ptot | 320 mW at Tamb ≤ 25 °C on FR4 PCB; defines continuous DC power handling in standard layout |
| Junction temperature Tj | 150 °C max; enables operation in industrial ambient environments without active cooling |
| Thermal resistance Rth(j-a) | 390 K/W in free air; used to calculate junction temperature rise under real-world board conditions |
| Non-repetitive peak power PZSM | 40 W for tp = 100 µs; supports surge suppression in ESD-coupled signal lines |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, marking bar indicates cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity-sensitive terminal requiring correct PCB silkscreen alignment |
| 2 | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 800 Ω max at 5 mA enables <10 mV output shift per 1 mA load change in reference circuits |
| Hard breakdown knee | Sharp transition into conduction improves regulation accuracy below rated current, critical for low-IZ applications |
| Very low leakage current | 2 µA max at 4.01 V minimizes error in high-impedance divider networks and battery-powered sensors |
| Small outline package | SOD323 footprint (1.7 × 1.25 mm) supports dense PCB layouts in space-constrained IoT and portable electronics |
| High-temperature operation | Rated to 150 °C junction temperature allows use in automotive under-hood auxiliary circuits and industrial controllers |
Applications
| Power Supply Feedback Loop | Sensor Bias Reference |
|---|---|
Use Scenario: Stabilizing output voltage of a switching DC-DC converter via optocoupler feedback path. IC Role / Device Role / Timing Role: Zener diode provides fixed 4.7 V reference to TL431 shunt regulator input, defining regulation threshold. Use Value: Tight ±5 % tolerance and low rdif reduce output voltage drift across line/load/temperature, improving system efficiency. |
Use Scenario: Providing stable excitation voltage to a resistive temperature detector (RTD) bridge. IC Role / Device Role / Timing Role: Acts as precision voltage source for constant-current generation in analog front-end circuitry. Use Value: Sub-µA leakage prevents measurement offset in high-gain instrumentation amplifiers, preserving 12-bit ADC accuracy. |
| Overvoltage Clamp | Microcontroller I/O Protection |
Use Scenario: Limiting transient voltage spikes on a 5 V logic rail caused by inductive load switching. IC Role / Device Role / Timing Role: Clamps surges above 4.7 V by conducting excess energy to ground before IC damage occurs. Use Value: 40 W non-repetitive peak power rating absorbs 100 µs transients without degradation, extending system lifetime. |
Use Scenario: Protecting GPIO pins of an ARM Cortex-M0+ MCU from ESD events during hot-plug USB interface operation. IC Role / Device Role / Timing Role: Placed between I/O line and ground to shunt fast-rising ESD pulses (<1 ns rise time). Use Value: Low capacitance (325 pF) avoids signal integrity degradation on 12 MHz SPI clock lines while meeting IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B4V7 | Same 4.7 V ±5 %, but higher rdif (1000 Ω max) and 5 µA IR at 4.01 V | Less stable under dynamic load; unsuitable for precision references below 1 mA | Select when cost is primary and regulation accuracy >50 mV is acceptable |
| PZU4.7B2A,115 | Same package and VZ, but ±2 % tolerance (B2 series) and 800 Ω rdif at 5 mA | Improved voltage accuracy enables tighter feedback control in regulated power supplies | Select when system-level calibration is impractical and initial tolerance must be <±25 mV |
Compared with PZU4.7BA,115, BZX384-B4V7 trades regulation precision for broader availability, while PZU4.7B2A,115 delivers tighter initial tolerance without changing thermal or footprint constraints - making it ideal for closed-loop systems requiring first-pass accuracy.
Availability
PZU4.7BA,115 is available at Aetrix Electronics and suitable for power supply feedback loops, sensor bias references, overvoltage clamping, and microcontroller I/O protection requiring stable component supply across industrial, automotive auxiliary, and consumer electronics programs.
Supply support for PZU4.7BA,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on essential efficiency-enhancing components, delivering high-volume, high-reliability discrete and logic devices for automotive, industrial, and mobile markets.
PZUxBA series belongs to Nexperia's general-purpose Zener regulator product line, engineered for stable voltage reference and transient suppression in cost-sensitive, space-constrained applications where precision and thermal robustness are balanced.
FAQ
What is the maximum continuous forward current for PZU4.7BA,115?
The absolute maximum forward current is 200 mA per limiting values table. However, forward conduction is not its intended operating mode; sustained forward bias exceeds thermal limits and risks permanent degradation. Designers should operate exclusively in reverse breakdown for regulation or clamping functions.
Does PZU4.7BA,115 meet RoHS and REACH compliance?
Yes - PZU4.7BA,115 is manufactured per Nexperia's standard environmental policy and conforms to EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full material declarations and test reports are available through Nexperia's Product Change Notification portal upon request.
Can PZU4.7BA,115 replace a 5.1 V Zener in a feedback network?
No - its 4.7 V nominal Zener voltage creates a 0.4 V regulation offset that alters feedback setpoint and may cause output overvoltage or instability. Direct substitution requires recalculating resistor dividers and verifying loop compensation; use only if system tolerances accommodate the 8 % voltage reduction.
What is the recommended soldering profile for SOD323 mounting?
Nexperia specifies reflow profile per J-STD-020: peak temperature 260 °C max, time above 217 °C ≤ 60 s, ramp-up rate ≤ 3 °C/s. Wave soldering requires preheating to 100–150 °C and contact time ≤ 5 s. Footprint dimensions and solder mask openings are detailed in Figure 10 of the datasheet.
PZU4.7BA,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PZU4.7BA,115 FAQ
1.How can I place an order for PZU4.7BA,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU4.7BA,115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PZU4.7BA,115 reliable?
The price and inventory of PZU4.7BA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU4.7BA,115 is usually 5 days.
3.What payment methods are accepted for PZU4.7BA,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU4.7BA,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU4.7BA,115?
PZU4.7BA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU4.7BA,115 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PZU4.7BA,115?
For technical support, including PZU4.7BA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU4.7BA,115 requirements.
6.How does Aetrix verify that PZU4.7BA,115 is sourced from the original manufacturer or authorized distributors?
All PZU4.7BA,115 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PZU4.7BA,115 meets industry standards.
7.What is the process for return or replacement of PZU4.7BA,115?
All PZU4.7BA,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU4.7BA,115, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PZU4.7BA,115 part is unused and in its original packaging.
Return procedure for PZU4.7BA,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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